rake aborted! NameError: uninitialized constant Users

Question

我的数据库似乎运行出了问题。我一直在使用 Rails 创建一个网站，并且我有一个用户数据库。我需要做一些改变，所以我耙 db:drop 现在我看到这个错误：

这是我的用户控制器：

class UsersController < ApplicationController
  def new
    @user = User.new
  end

  def show
    @user = User.find(params[:id])
  end

  def create
    @user = User.new(user_params)
      if @user.save
        session[:user_id] = @user.id
        redirect_to @user
      else
        render 'new'
      end
  end

  private
  def user_params
    params.require(:user).permit(:first_name, :last_name, :email, :password, :password_confirmation, :phone_number, :address_one, :address_two, :city, :country, :state, :zip)
    end
end

我的用户模型：

class User < ActiveRecord::Base
  has_secure_password
  validates :email, presence: true

  def self.from_omniauth(auth)
    where(provider: auth.provider, uid: auth.id).first_or_create do |user|
      user.provider = auth.provider
      user.uid = auth.uid
      user.name = auth.info.name
      user.oauth_token = auth.credentials.token
      user.oauth_expires_at = Time.at(auth.credentials.expires_at)
      user.password = "a"
      user.email = user.uid
      user.save!
    end
  end
end

和我当前的用户数据库 table

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :first_name
      t.string :last_name
      t.string :email
      t.string :password_digest
      t.string :phone_number
      t.string :address_one
      t.string :address_two
      t.string :city
      t.string :country
      t.string :state
      t.string :zip
    end
  end
end

感谢您提供的任何建议或帮助！

Answer 1

迁移文件名和class 名称应该相同。两者需要保持一致才能rails动态加载合适的class.

class CreateUsers < ActiveRecord::Migration 改为 class Users < ActiveRecord::Migration

运行 rake db:migrate

rake aborted! NameError: uninitialized constant Users

rake aborted! NameError: uninitialized constant Users

database

rake

ruby-on-rails

abort